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The parameter σu and m are material parameters, i.e. independent of the stress state of materials, but may depend on the temperature.
Cannon et al: Mechanics of Materials Vol. 25 (1997), p. 291-308 [6] Tae Sung Oh, R.M.
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Berg et al: International Journal of Refractory Metals & Hard Materials Vol. 14 (1996), p. 207-211 [12] B.
Bruckner-Foit, D Muaz et al: International Journal of Fracture Vol. 54 (1992), p. 197-210 [20] Hongyang Jing, Lianyong Xu, Lixing Huo et al: Journal of Materials Science and Technology Vol. 20 (2004), p. 113-117 [21] Hongyang Jing, Lianyong Xu, Lixing Huo et al: Journal of Materials Science and Technology Vol. 21 (2005), p. 1-4 [22] Fumiyoshi Minami, S.

Li, Preparation and characteristics of NixFe3- xO4- encapsulated hollow glass spheres by ferrite plating, Journal of Fouctional Materials and Devices. 15(2009) 198-203
Zou, Hollow glass microspheres coated with CoFe2O4 and its microwave absorption property Journal of Magnetism and Magnetic Materials. 316(2007) 54-59
Park, Effects of Mn Substitution of Co and Fe in Spinel CoFe2O4 Thin Films, Journal of Magnetism and Magnetic Materials. 304 (2006) 106-111
Bhowmik, Mechanical Alloyed Ho3+ Doping in CoFe2O4 Spinel Ferrite and Understanding of Magnetic Nanodomains, Journal of Magnetism and Magnetic Materials. 322(2010) 767-760
Xu, Magnetic and Microwave Absorption Proweties of Ni1−xCoxFe2O4 nanometer powders in GHz Frequencies Materials Science Forum. 694 (2011) 380-384.

Eghbali, “Characterization of the hot deformation microstructure of AISI 321 austenitic stainless steel,” Materials Science and Engineering: A, vol. 730, pp. 380–390, Jul. 2018, doi: 10.1016/J.MSEA.2018.06.025
Ucar, “Comparison of mechanical properties of boronized and vanadium carbide coated AISI 1040 steels,” Indian Journal of Engineering and Materials Sciences, 16(5):326-330 2009
Yapici, “ Fracture behavior of ultrafine-grained titanium under tension at elevated temperatures,” Journal of Engineering Materials and Technology, vol. 143, no. 4, Oct. 2020, doi: 10.1115/1.4047747 [10] S.V.
Yapici, “On the High-Temperature Flow Response of Friction Stir Processed Magnesium Metal Matrix Composites,” Journal of Engineering Materials and Technology, vol. 143, no. 1, Jan. 2021, doi: 10.1115/1.4047966
Yapici, “High temperature characteristics of Al2024/SiC metal matrix composite fabricated by friction stir processing,” Materials Science and Engineering: A, vol. 731, pp. 487–494, Jul. 2018, doi: 10.1016/j.msea.2018.06.077

The damage parameter represents the condition of the material deterioration in creep regime, which varies from 0 to 1 indicating virgin material and fully damaged material respectively. , , , and are the material constants in Norton’s law, which can be obtained in general by curve fitting.
Hodge, Plane stress limit analysis by finite elements, Journal of the Engineering Mechanics Division, 96 (1970) 931-944
Mathew, Finite element analysis of effect of triaxial state of stress on creep cavitation and rupture behaviour of 2.25Cr–1Mo steel, International Journal of Mechanical Sciences, 75 (2013) 233-243
Kachanov, On destruction in creeping of materials, Izvestia Akademii Nauk SSSR, Otdelenie Tekhnicheskich Nauk, 8 (1958) 26-31
Murakami, Damage localization of conventional creep damage models and proposition of a new model for creep damage analysis, JSME International Journal, Series A: Solid Mechanics and Material Engineering, 41 (1998) 57-65

GJJ14558 and KJLD13070), Project of Jiangxi Youth Scientist (No. 20122BCB23031), Innovative Projects for Students of Jiangxi Science and Technology Normal University (Nos. 20150904004 and YC2015-S396) and Scientific & Technological Project of nano functional materials innovation team of Jiangxi Science and Technology Normal University (No. 2015CXTD003), respectively.
Comparison of TiAlN, AlCrN, and AlCrN/TiAlN coatings for cutting-tool applications, International Journal of Minerals, Metallurgy and Materials. 21:8 (2014) 796-805
Influence of Substrate Temperature and Bias Voltage on Structure and Mechanical Properties of CrN Coatings, Key Engineering Materials. 591 (2014) 99-193
A review of adhesion test methods for thin hard coatings, Journal of Vacuum Science and Technology.
Effect of substrate temperature on properties of TiN coatings deposited by arc ion plating, Journal of Northeastern University (Natural Science). 35:S2 (2014) 1-4

Suzuki: Materials Science & Engineering A: Structural Materials: Properties, Microstructure & Processing Vol.
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Swift: Journal of Materials Science Vol. 35 (2000), p. 3131-3141
Forrester: Journal of Materials Science Vol. 32 (1997), p. 3157- 3162
Li: Materials Science and Technology Vol. 14 (1998), p. 287-291

Rohatgi: Journal of Materials Science Vol. 21 (1986), p.4299
Li: Materials and Manufacturing Processes Vol.21 (2006), p181
Sarwade: Materials Chemistry and Physics Vol. 92 (2005), p458
Zeng: Micro-damage mechanisms and strength of composite materials (Science Publications, China 2002)
Fan: Micromechanics of composite materials (Science Publications, China 1998)

Heap leaching is relatively environmentally friendly process that allows to use low quality mineral raw materials.
Now they are of interest as raw materials for leaching.
Raw materials inventory are 200-300 thousand tons.
[10] Xiu-xiu Miao, Ai-xiang Wu, Bao-hua Yang, Jin-zhi Liu, Sheng-hua Yin, Hong-jiang Wang, Unsaturated flow and solute transport in a porous column using spherical ore particles, International Journal of Minerals, Metallurgy and Materials. 21 (2014) 113-121
Ranjbar, Use of mesophilic and thermophilic bacteria for the improvement of copper extraction from a low-grade ore, International Journal of Minerals, Metallurgy and Materials. 18 (2011) 138-143

Department of Material Science and Engineering, Dalian Polytechnic University, Dalian 116034, China 2.
Experimental procedures The preparation of permeable materials 1) The pretreatment of raw materials.
Put raw materials respectively in drying oven.
The mineralogical compositions of raw materials were determined via XRD.
Bontempi: Journal of Environmental Monitoring Vol. 12(2010), p.2093 [2] M.

The highest of urban flood risk are Tianjin, Wuhan and Guangzhou[5].Fourth, water supply and drainage engineering is the main application fields of new materials such as pipeline and membrane material.
New materials, new equipment, automatic control technology and information technology have been widely applied to water supply and drainage engineering, greatly promoting water supply and drainage technology innovation and changes in talents cultivating mode.
References [1] Zhenhua Liu, Research on Rural Drinking Water Project Management, International Journal of Advancements in Computing Technology, Vol. 4, No. 15, pp. 387~394, 2012
Journal of East China Jiaotong University.Vol. 29 (2007) No.5, pp. 72-75
Journal of Beijing Normal University(Social Science Edition). (2004) No.3, pp. 138-143